Final answer:
Conventional risk factors, including both modifiable and non-modifiable elements like age, genetics, and lifestyle choices, explain a significant majority of heart attacks.
Studies like the INTERHEART study have shown that these factors play a crucial role in the risk for heart attacks. The actual percentage falls likely between 50-90%, depending on the population and the study consulted.
Step-by-step explanation:
The majority of heart attacks are explained by conventional risk factors that can often be modified through lifestyle changes or managed with medication. Factors such as age, genetics, and gender are non-modifiable and contribute significantly to cardiovascular risk.
However, many heart attacks are associated with controllable factors such as high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, depression, and excessive alcohol consumption.
Concerning the question of what percentage of all heart attacks are explained by conventional risk factors, while exact percentages can be difficult to attribute due to variations in populations and methodologies of studies, a comprehensive approach considering all the modifiable and non-modifiable risk factors would suggest that a significant majority falls within these conventional elements.
According to the INTERHEART study, psychosocial factors also play a role in the risk for acute myocardial infarction. While this does not provide a precise answer, it indicates that much of the risk is indeed explained by these conventional factors.
Based on the information provided and established clinical understanding, conventional risk factors explain a high proportion of heart attacks, likely aligning most closely with options 3) 50-75% or 4) 75-90%. However, it is essential to consult updated clinical studies or authoritative medical guidelines to pinpoint the most current statistics.